Bar support and spacer



Mmh 22,1932. AMPERT 1,850,401

A BAR SUPPORT AND SPACER Filed Feb. 2l, y1931 @@Mllllf a j.. y 7;? i

Patented Mar, 22, 1932 UNETED STATES LSSQAI PATENT @FFQE LYDIA LAMPERT,OF CHICAGO, ILLINOIS, ASSIGNOR TO UNIVERSAL FORM CLAMP CO., OF CHCAGO,LLINOES, A CORPORATION OF ILLINOIS BAR SUPPORT AND SPACER Applicationled February 21, 1931.

The main objects of this invention are to provide an improved barsupport and spacer for use in supporting reinforcing bars used inconcrete construction work and to space them the desired distance fromone another and from the forms; to provide an improved form of barsupporting chair; and to provide an improved bar support and spacer ofsimple construction which requires a minimum amount of hand labor in theassembly of its parts.

An illustrative embodiment of this invention is shown in theaccompanying drawings, wherein Figure l is a fragmentary perspective ofa bar support and spacer, showing two of the improved chairs secured toa spacing rod.

Fig. 2 is a side elevation of the same, showing also two reinforcingbars in section as they appear when seated on the chairs; the dottedlines representing the reinforcing bars prior to being forced downwardlyinto the chair seats.

Fig. 3 is a vertical section, taken on the line 3-3 of Fig. 2.

Fig. 4 is a top plan of the portion shown in Fig. 3; but shows thereinforcing bar in dotted outline.

ln the form shown, the reinforcing system 3o involves the use of thecustomary reinforcing bars l disposed horizontally in substantiallyparallel spaced relation above a falsework, not shown.

The improved bar support and spacer comprises a plurality of supportingchairs 2, which are spot welded or otherwise rigidly secured to aspacing rod 3, whereby the chairs are permanently spaced the desireddistance from one another. rlhe chairs 2 and w spacing rod 3 are made ofwire of a gauge which will insure the necessary rigidity but stillpermit the chairs to be bent to the desired shape.

In the form shown, each of the supporting chairs 2 comprises a singlepiece of wire hav- Serial No. 517,514.

ing its central portion doubled upon itself to form a verticalintermediate leg l located below the spacing rod. The upper ends of theleg 4 form a pair of arms 5 which are bent to deiine a substantiallyU-shaped seat located in the vertical plane of the intermediate leg andhaving its base part located above the spacing rod 3. V ith thisimproved construction, the entire weight of the reinforcing bars iscarried by the chairs. If the 5,5V

bars were carried by the spacing rod, the strain might rupture thewelded joints. In order to restrict the throat of the U-shaped seat, thearms 5 are crimped inwardly, as shown at 6.

The upper ends of the arms 5 are bent to form a pair of end legs 7,which diverge downwardly relative to the vertical plane of the seat, soas to secure the chairs against tipping.

In operation, the improved devices are placed on the falsework with thespacing rods 3 disposed substantially parallel to one another at thedesired intervals. The reinforcing bars are then placed in the throatsof the seats and are pressed downwardly into their chairs.

Although but one specific embodiment of this invention has been hereinshown and described, it will be understood that numerous details of theconstruction shown may be altered or omitted without departing from thespirit of this invention as defined by the following claims.

I claim:

l. A reinforcing bar chair comprising a single piece of wire having itscentral portion doubled upon itself to form a vertical intermediate leg,the upper ends of said leg forming a pair of arms bent to define asubstantially U-shaped seat located in the vertical plane of saidintermediate leg, the upper ends of said arms being bent downwardly andoutwardly to form a pair of end legs diverging downwardly onrespectively opposite sides of said Vertical plane.

2. A reinforcing bar support and spacer comprising a spacing rod and aplurality of Chairs welded thereto, each of said chairs 5 comprising asingle piece of wire having its central portion doubled upon itself toform a vertical intermediate leg Welded to said rod, the upper ends ofsaid leg forming a pair of arms bent to define a substantially U-shapedseat located in the Vertical plane ofsaid intermediate leg, the upperends of said Varms being bentdownwardly to form a pair of end legsdiverging downwardly on respectively opposite-sides of said spacing rodand -of said vertical plane.

Signed at Chicago this 19th day of F ,ebrllary, 1931.

LYDIA LAMPERT.

